Zwiebelkuchen, which literally means "onion cake" in the German language, is actually a savoury tart (a quiche?) prepared with onions and sour cream on a leavened or yeast dough, that is very popular in the German wine-growing regions. Serve them warm with a glass of chilled half dry German Risling or fruity Corbières if you prefer red.
Quark Dough adapted from Grundrezept Quark-Öl-Teig
Topping Recipe adapted from Tobiaskocht

Cut the ends off the onions and slice them into thick rings. Slice the spring onions into rings too. Heat a skillet with olive oil over medium flame. Add in onions and stir-fry until lightly golden. Stir in chopped spring onions. Season the mixture with salt and pepper. Turn off the heat and set aside.

Combine the flour, baking powder, salt and sugar in a mixing bowl. Add in egg, Quark, olive oil and milk. Stir until the dough forms a ball. Preheat the oven to 180C/350F. Line a baking tray, about 30x40 cm, with parchment paper. Roll out dough on a lightly floured surface into a rectangle and fit into prepared baking tray.

Top the dough with the herb cream evenly. Spread the caramelized onion all over the cream. Sprinkle the top with salt, pepper and cumin. Bake for 25-30 minutes until beautifully browned.

wow, what a beautiful tart! i love the pictures as well. i will try to make this very soon, i am in love with tarts. i used to make them much more when i first learned to cook, but am in need of some new ideas. thanks for sharing! cheers.

Strangely, I've purchased 'Quark cheese' only once before for a certain recipe that I actually barely recall.I love caramelized onions on pizza...and this tart has such an interesting dough that I'm willing to put 'Quark' back on my grocery list ;o)Thanks Angie and have a wonderful day.

This looks absolutely scrumptious to me ... carmelized onions, sour cream, bread. Seems similar to pissaladiere, what I think is French. The biggest difference I see are that the French version has anchovies (fine by me; not so much with all the world!) and olives. I want this German-style one, too!

Quark dough, what a cute name. This onion tart looks great, and I could totally see why it's eaten in the wine growing regions! It's a great snack to have along with wine. Hope you have a wonderful Wednesday, Angie!

Angie, I'm so glad you posted this because I am having some company over the weekend and they are from Germany, Hanover to be exact... and they are homesick! I can't wait to surprise them with this! Thank you for sharing!!

I adore onions...and I can just imagine how popular this would be at a dinner party I'm having in the near future. Yum! Thank you for sharing, sweetheart. I hope you have a wonderful Friday...and an even better weekend.

Oh, Wow! This looks so hearty, Angie. I mean, golden onions and cheese on delicious looking bread like that-are there really many things better in this life (smile)?! Ooh, and that bottom photo is so appealing. It made me want a glass of oaky red wine with a piece of this. Yum!

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